| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve durability of a tire by appropriately setting the position of a base part of a partition wall in a pneumatic tire having three air chambers. <P>SOLUTION: When distance between the centers of respective base parts 20 in a pair of right and left partition walls 18 is KW, and the ground contact width of a tread part 16 is TW, the relationship between them is 0.3TW<KW<TW. Even when the main air chamber 28 is punctured due to treading a nail, the inner pressure becomes 0, and it is necessary to support the load by at least one of a first sub air chamber 31 or a second sub air chamber 32, the deflection amount of the tire can be suppressed by setting the KW within the preferable range, and the durability can be ensured by suppressing the heating value of the tire. Breakage of a ply cord of the inside carcass 22 is prevented by preventing the mutual contact of the partition walls 18, and the durability of the tire can be ensured. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
